It's a wonderful phrase, and for me, quite correct ... The best things in life can not be bought with money. Love for example, health ... Life in general. When we have a rich life in that sense; everything else is quite simple.
If the goal is to get rich, but we dont love what we do, we dont have the energy to do things, or we feel empty ... Then we probably will not achieve it.

That just to mention some things.
Greetings from Venezuela!